Window-operating apparatus.



A. K. LOVELL.

wmnow OPERATING APPARATUS.

APPLICATION FILED FEB. 14, 193. Llgg, Patentedept. 7, 1915.

2 SHEETS-SHEET 1.

' 46, -A Wim/E555 l 33. S 638374@ ,5f 335 i JNVENTOR 0g 1%@ lA. K. LOVELL. WINDOW OPERATING APPARATUS.

APPLICATION FILED FEB. I4, i913.V

2 SHEETS-SHEET `2.

Patented Sept.

V I y I l N[NVE/V701; l

i. Alarnej/ WINDOW-DPERATING APPRATUS.

Specification of Letters Patent.

ratentea sept. a, mit.

Application filed February 14, 1913. Serial No. 748,501.

To all whom it may concern:

Be it known that I, ALBERT K. LovnLL, a citizen of the United States, residing at New Haven, in the county of New Haven, State of Connecticut, haveinvented new and useful Improvements in Window perating Apparatus, of which the following is aspeciication.

My invention relates to window operating apparatus, and it has for its object to provide improved screw mechanism and gearing for actuating window sash either independently or jointly and holding them automatically locked in any position.

The invention consists in the novel combination, arrangement and construction of the parts of the mechanism as hereinafter more fully described i and claimed.

In the' accompanying drawings forming a part of this specification: Figure '1 is a front elevation of a window frame and sashes fitted with my improved operating mechanism, shown as it would appear from the interior of the apartment with the window casing removed. Fig. 2 is a side elevation of Fig. 1. Fig. 3 is a horizontal section the frame of an ordinary tw on the plane 3, 3 of Fig. 1. Fig. 4 is a horizontal section through the universal joint .of the sash supporting mechanism on plane 4, 4 of Fig. 5. Fig. 5 is part of a front elevation similar to Fig. 1 partly in section, the mechanism on an enlarged scale. Fig. 6 is a view of the upper part of the inner face of the side of the frame, showing the guideways of the sashes. Fig. 7 is a cross section through the universal joint of a screw shaft on plane 7, 7 of Fig. 5.

Referring to the drawings, l designates sash window having the upper and lower sashes 2 and 3 arranged to slide in suitable guideways on the sides or j ambs .in-the ordinary and well known manner. Mounted on the respective exterior sides of the upper part of the frame in the plane of the upper sash is a pair of vertical operating screws 4 having their shanks extending down below to the bottom of the window sill 7 with their lower ends journaled or stepped in bearings 5 in a hanger 6 here vshown suspended from the lower side of the sill. Similarly stepped in the hanger 6 in the plane of the lower sash on the lower part of the frame is another pairof vertical operating 'screws 8, and both sets of screws areloosely j ournaled at their `npper ends in bearings 9 attached tothe showing which are adapted to it into frame respectively at the upper and middle parts thereof. Upon the rear screws or those which stand in the plane of the upper sash are mounted the engaging nuts 10 carried upon arms or bracket portions 11 which are inserted through and adapted to travel inV vertical slots 12 in the corresponding guideways of the frame, and are engaged with holding plates 13 attached to the side of the upper sash near its upper corner. Mounted on the front screws or those standing in the plane of the lower sash are similar engaging nuts 14 carried on the arms 15 inserted through and adapted to travel in vertical slots 16 in the guideways of the lower sash and engaged with holding plates 17 attached to the side of the lower sash near its lower corner. On the lower ends of the screws are lixed the bevel gears 18 above the bearings fastened by suitable means adapted to hold the gears from rotating on the screws or sliding longitudinally thereon. v

In the construction shown in Figs. 1, 2 and 3 the nuts are integral parts of the brackets, but in Figs. 4 and 5 is shown the generally preferred form of these parts, which .comprise a -nut 20 horizontally hinged to a swivel 21 which is pivoted to the bracket 22 on an axis in the same horizontal plane as that of the axis of the hinge by the rivet 23 formlng a universal joint therewith. The brackets 22 are provided with the dove-tailed parts 24 corresponding dove-tailed grooves 25 in the holding plates 13 to enable the sashes to be slid into engage- .ment with them in being placed in the frame.

- The parts of the screws above the bevel gears 18 are separate from the lower parts and the two portions are connected by universal joints, each comprising a fork 26 fastened to the lower end of the upper portion of the shaft and pivoted by means of screws 27 to a part 28 which is similarly pivoted to ears 29 upon the upper sides of the bevel gear. By means of this construction and that of Vthe nuts and brackets the screws are enabled to assume positions `of slight Obliquity to the axes of the gears when the settling of the foundations of the building or distortions of the walls throw the window frames and the sash operating mechanism out of their original relation or alinement. The bevel tened upon their shafts by keys or any other suitable means, and the shafts may be held in their steps or bearings 5 by' means of setgears 18 may be fas-.

screws screwed through the bearings and engaging suitable slots 31 in vthe shafts, as shown in Fig. 5. y

Each pair of screws is driven to rotate in unison by a pair of horizontal shafts 32 arranged underneath the window sill in alinement provided with bevel gears 33 at their outer ends gearing with those of the screws, and bevel gears 34 at their inner ends gearing with a larger bevel gear hav. ing its axis at right angles to that of the shafts and intermediate of the gears on their inner ends. The shafts 32 are journaled at their outer ends in suitable bearings in the hangers 6 and at their inner ends in a hanger 35 supported from the sill as shown. The bevel gear 36 that drives the screws of the lower sash is mounted upon a sleeve 37 journaled in a bearing 38 in the hanger 35, and the bevel gear 39 for operating the screws of the upper sash is carried upon a shaft 40 which is journaled in the sleeve 37 concentric therewith, whereby bolts of said gears are adapted to rotate upon a common axis. The shaftv of the rear gear 39 projects rearwardly as shown and is journaled in a bearing 41 which is attachedto the hanger 35 by screws after the gear 36 is placed in its bearing and the rear gear journaled within it. The assembling of the shafts 32 may be easily accomplished before their gears are placed upon them, after which the gears may be put in place and secured by the set-screws 42. or other suitable means.

The front end of the shaft of the rear gear journaled within the sleeve 37is provided with a flatted tongue or part of square cross section 43 or otherwise shaped to be engaged by a suitable key by means of which it may be rotated, and the end of the .sleeve is also suitably shaped to provide shoulders by which it may be engaged by a key for being rotated, in the present insta-nce being formed with an internal rectangular recess or seat 44, as shown inFig.

5. A corresponding rectangular part 45 adapted for entrance into and engagement with said recess is provided in combination with a part 46 which is fitted centrally within it, and upon which the part 45 is adapted to slide, but prevented from vrotation upon by rectangular or other suitable configuration, as shown. The said parts 45 and 46 comprise a two'part key, by means of which, with the concentric 'arrangement of the driving gears, either or both of the gears may be operated, that is, singly or independently of each other to singly raise or lower the sashes, for jointly to actuate the sashes in unison, as follows: If both' the `-parts 45 and 46 be inserted into operative engagement with the sleeve and the shaft which is journaled within it, the rotation of the said two part key will actuate both sashes simultaneously. If it is desired to operate the upper sash alone, the withdrawal of the outer sliding part 45 from engagement with the recess of the sleeve will insure such ac tion by rendering the part 45 inoperative in the'j rotation of the key. To 0 erate the lower sash alone the reverse action of the parts, that is, the engagement-l of the outer sliding part 45 with the sleeve and withdrawal of the inner sliding part 46 from engagement with the tongue 43 of the shaft 40 will by rotation 'of-the key actuate the rear gear 39 independently and accomplish this result.

It will be understood that, inasmuch as the ordinary incasement of the window conceals the operating apparatus from4 view and accessibility, it will be necessary to pro` vide a suitable aperture in such casing for the insertion of the key in order to .operate the sashes. It will also be necessary, for the purpose of inserting the brackets which support the engaging nuts of the operating screws through the slots of the frame, to cut out a small section of the frame at the side of the slot, as at 47 in Fig. 6, to provide sufficient opening for the passage of the nut or of the dovetailed part at the opposite end of the bracket. Said section, by being sawed of greater length on the face ofthe frame than on the opposite side, as indi# cated, respectively, by the f ull and dotted lines in said figure, may be made removable and held in place by a pair of screws 48.

In the construction shown the operating screws are provided with right hand threads and the driving shafts which operate them are duplicates of each other, insuring uni- `form construction throughout the mechanism. The use of two separate shafts and doubled sets of gears are necessitated in the case of the inner screws by the requirement that the transverse axis of the main bevel gear 'that is provided for driving them must be coincident with the axis of the shafts that are at right angles with it, which prohibits the use of a continuous shaft from one screw to the other. While this necessity doesnot eXist in the case of the outer screws, thus rendering it possible to employ one continuous shaft between the screws, it is preferable to duplicate the mechanism of the inner screws therefor, whereby uniformity of construction throughout the mechanism is insured.

The proportions of the screws enable both the sashes to be operated throughout their entire movement, which brings the operating nuts to the position shown by the dotted lines in Fig. 1. It is obvious that in windows where only a single sash is to be operated only a single set of operating screws will be necessary, and in such case the use of two shafts for connecting the screws of the set will be unnecessary, as a single shaft 1,152,425 mail will suiiice. `It will also be understood that where window sashes are arranged to slide' horizontally, or swing upon vertical axes, the mechanism for operating them will be correspondingly arranged, whereby vertical parts of the construction shown will be disposed horizontally, and horizontal parts arranged vertically similarly as when the drawings are viewed as turned at right angles to their correct position, the principles of the invention remaining the same.

I claim as my invention:

l. In window operating apparatus, the combination with a movable sash, of a pair of actuating screws mounted in the frame for supporting the sash, engaging nuts fitting and adapted to travel on the screws, universal coupling mechanism connecting the engaging nuts to the sash, and universal coupling joints between the scrws and their mountings for enabling the screws to sway in conjunction with the sash.

2. Inwindow operating mechanism the combination of a window frame, a pair of sashes movable in the frame, a pair of operating screws for each sash each pair arranged with the sash supported between them, engaging nuts carried by the screws and connected to the sashes, a pair of driving shafts for each pair of screws, gearing for transmitting the motion of the driving shafts to the screws, a driving gear for each pair of driving shafts, said respective driving gears being mounted and adapted to rotate upon a common axial center, gearing for transmitting the motion of each driving gear to its corresponding -pair of shafts to rotate them in unison, a rotatively mounted clutch key axially engageable with one of the driving gears, and a clutching head mounted upon the key and rotatively driven thereby, engageable with the other driving gear whereby the respective gears and corresponding sashes may be operated independently or together.

3. In operating mechanism for double sash windows, comprising independent sets of operating devices for the respective s'ashes the combination of a driving gear for each set of mechanism, both mounted on a common axial center, gea-ring for transmitting the motion of each driving gear to the corresponding operating mechanism, a rotatively mounted clutch key axially engageable with one of the driving gears, and a clutching head mounted upon the key and rotatively driven thereby engageable with the other driving gear whereby the respective gears and corresponding sashes may be operated independently or together. y

In testimony whereofI aliix my signature in the presence of two witnesses. 4 ALBERT K. LOVELL. Witnesses C. S. GRUMMAN, JAMES I-I. MARR. 

